• For subsequent checking of the insulation level and without opening the waterproofing sheets
• Complete set of upper section and base element
• Incl. removable insulation core and with integrated lip seal
• Inspection chamber base element with water inlet slots

Flange collar optionally available in:

• Flange collar made of bituminous membrane (PYE PV 200 S4 sanded surface)
• PVC roofing sheet, Resitrix or Elevate

 In the version with flange collar made of bituminous membrane, the flange collar is root penetration resistant in accordance with EN 13948.